Photo litho



(No Model!) J. R. BOSTWIUK.

PIPE THIMBLE.

No. 593,269. Patented Nov. 9. 1897.

. Inve-n for:

a, is. 07d;

. It is of course a mere matter of convenience whether these flanges are turned inward or outward, the holding-lips being formed either ,vention, a part being broken away. Fig. 2

UNITED STATES PATENT Oriuon.

JOHN R. BOSTWIOK, OF CLIFTON SPRINGS, NEW YORK, ASSIGNOR TO STOWELL & BOSTIVIOK, OF SAME PLACE.

PIPE-THIMBLE.

SPECIFICATION forming part of Letters Patent No. 593,269, dated November 9, 1897.

Application filed February 1 0 l 8 96 To all whom it may concern:

Be it known that I, JOHN R. BOSTWICK, of Clifton Springs, in the county of Ontario and State of New York, have invented a new and useful Improvement in Pipe-Thimbles, which improvement is fully set forth in the following specification and shown in the accompanying drawings.

My invention relates to Stovepipe-thinlbles 5 and it has for its object to provide a device whieh shall be simple, effective, and durable; and it consists in the novel features of the same, as will be hereinafter more particularly set forth.

Referring to the drawings, Figure 1 is a plan of a stovepipe-thimble showing my inis a side elevation of parts of the thimble and Stovepipe, parts of the former being longitudinally sectioned; and Figs. 3 and 4 are sectional detail views. Figs. 3 and t are drawn to an exaggerated scale to more clearly show the construction of the parts.

Referring to the parts shown, A A are the heads of the thimble, and B C the outer and inner cylindrical parts forming the body thereof. The heads are annular, and the parts B O are adapted to telescope together or slide upon each other in the usual manner. Each head is formed with the usual stiffening ring or head 12 intermediate the edges of the head and with the ventilating-holes c intermediate the bead and the inner edge of the head. I also form each head with a series of inwardly-turned lips d, produced by forming semicircular openings c in the head between the openings 0, as shown, the lips not being separated from the head, but only bent or pushed back therefrom. These lips thus remain integral parts of the head, the lines of separation being alongthe curved lines of the openings only. Along the diameters of the openings the material is not cut in forming the lips, which are turned inward and backward to engage the body of the thimble.

The thimble is formed with flan gesf, around and across the edges of which the lips d are closely bent, as shown, which hold the parts firmly and securely together without solder.

Serial No. 578,739. (No model.)

inside or outside of thebead b to correspond. The lips are formed in such positions that when bent backward they bear against the edges or parts of the flanges at 70, as clearly shown in Figs. 3 and 4, besides being turned to bear firmly against the under surfaces of the flanges. On account of the bearings at k the lips serve to accurately center the heads upon the body of the thimble and prevent any relative lateral motion of those parts.

The ends of the body in contact with the heads are each formed with a ridge or bead g, as shown in Figs. 3 and 4', which occupies the hollow of the annular beads or rings 17, which assist in securing the parts together. If desired, flanges f may be turned downward, as shown in Fig. 4:, instead of projecting laterally, as shown in Fig. 3. This forms a hook into which each of the lips is bent.

The inner edges of the heads A, I prefer to form with stiffening beads or rolls 6 adjacent to the stovepipe D. These stiifeners maybe of any desired form, their use being solely for the purpose of stifiening the heads at their inner edges.

I prefer to form the free edge of the inner part 0 with a wired roll a for the purpose of stiifening the same. Also the two parts of the thimble-the parts B and O, with their respective headsmay be held together by any means that is convenient, this not being essential to my invention, which relates to the form of the heads and the manner of securing them to place upon the body.

What I claim as my invention is- In a stovepipe-thimble, the combination, with annular heads, each of which is provided with an annular bead, a series of lips adjacent thereto, and ventilating-holes intermediate the bead and the inner edge of the head, and a body, the ends of which are each provided with a bead and a flange the head of 9 the body fitting within the bead of the head, and the flange being secured by the lips, substantially as set forth.

In witness whereof I have hereunto set my hand, this 6th day of February, 1896, in the presence of two subscribing witnesses.

JOHN R. BOSTWIGK.

Witnesses:

H. K. CARPENTER, G. A. LONDRIER. 

